Driver module

Feed the wiring and driver through the headlight bucket

LEDs and Bulbs

Bulbs: https://www.amazon.com/gp/product/B077B3SNJR Housings: https://www.amazon.com/gp/product/B07F31V2CD

De-pin and swap

I do not like the H4 adapter harnesses. Adding two additional connectors creates two new failure points.

You only need to swap the two wires with stripes: Top and Right in this pic

-Use a small tool to release the lock tab
-Push the connectors out of the connector housing
-Bend the lock tabs back in to place -Flip and reinsert into connector housing.

Prepare housing

Remove the plastic plug from the housing.

Clamp H4 adapter

... and clamp the H4 adapter into place.

Pioneer Finished

The finished stack-up

Housing installed

No cutting necessary!

Remove H4 adapter

The bulb mounts to the H4 adapter using a bayonet lock. Remove the adapter...

DIN adapter finish

Final finish. Not perfect but I expect to make changes to this adapter over time.

DIN adapter Arduino

Arduino Nano on a breakout board. OLED and seat controls connected.

DIN adapter test fit

Final fit test for DIN adapter plate

Pioneer wiring check

Checking wiring before bolting down the center console

Production panel ABS

Final printing in ABS. The first print warped significantly - 2nd print was slowed down with an added brim and warp was eliminated.

Rubber boot and bulb

Reinstall the rubber boot and lock the bulb module into place.

Wiring Transgressions

After 21 years of ownership and multiple modifications, it was time to do some landscaping.

Pioneer brain mounting

Mounting the radio body to some angle aluminum and fastened to the locking compartment lid using original screw locations.